Improvements after mod Quad and triangle tilt revision surgical procedures in obstetric brachial plexus palsy

Table 2 Comparing anatomical improvements of triangle tilt to other surgeon surgeries in obstetric brachial plexus palsy

Patients	Other surgeons and previous surgeries	PreTT-PHHA	PostTT-PHHA	PreTT-Version	PostTT-Version	PreTT-SHEAR	PostTT-SHEAR
1	Subscap release and lat dorsi rerouting	8	33	-47	-14
2	Neurolysis, MQ, HO	16	14	-41	-35	24	10
3	MQ	-12	19	-65	-33	40	39
4	Nerve graft, FO, BTL, MQ	32	37	-21	-10	3	1
5	Botox, MQ	33	45	-18	-15	15	3
6	Nerve graft	47	48	-10	-1	5	14
7	Neurolysis, nerve graft	-7	22	-62	-12	8	22
8	Neuroma excision, nerve graft	34	35	-20	-11	0	0
9	Nerve transfer	33	29	-16	-21	15	12
10	Coracoacromial release/resection	-12	17	-51	-35	30	15
11	Neurolysis, nerve graft	13	4	-20	-15	7	4
12	Wrist Caps, HO	39	50	0	0	9	0
13	Sural nerve graft	38	51	-10	-4	0	1
14	Botox, MQ	-8	44	-38	-22	11	2
15	Neurolysis, MQ	-14	35	-33	-10	25	30
16	Muscle release	0	19	-45	-27	32	8
17	Anterior capsule release	-11	34	-53	-22	48	41
18	Tendon transfer and neurolysis	33	39	-18	-7	1	1
Mean		14.6 ±	31.9 ±	-31.6 ±	-16.3 ±	16.1 ±	11.9 ±
STD		21.7	13.6	19.3	11.0	14.7	13.5
P value			0.001		0.0002		0.087

Normal values are PHHA 50, glenoid version and SHEAR 0. TT: Triangle Tilt; MQ: Mod Quad; HO: Humeral Osteotomy; FO: Forearm Osteotomy; BTL: Biceps Tendon Lengthening; PHHA: Percentage of the Humeral Head Anterior.